A student investigates the time taken for ice cubes to melt in a beaker of hot water, using a 250 cm³ beaker, hot water, ice cubes, thermometer, stopwatch and 2 mm cardboard sheets.
Plan an investigation of how the thickness of cardboard insulation around a beaker changes the time for ice cubes to melt. Describe the method, key variables to keep constant, an empty results table with units and how to use the readings for a conclusion.